Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas pernas de grupo foram ganhas pelo jogador Mark Dudbridge?
 ###Tabelas: CREATE TABLE ethnic_groups_and_demographics (ethnic_groups_and_demographics_id AUTO_INCREMENT PRIMARY KEY, Raion (district) or City VARCHAR, Total VARCHAR, Ukrainians VARCHAR, Moldovans VARCHAR, Bessarabian Bulgarians VARCHAR, Russians VARCHAR, Gagauzians VARCHAR, Other ethnic groups² VARCHAR) CREATE TABLE prize_money_won (prize_money_won_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Group Legs won INT, Play-Off Legs won INT, Winners Group Legs won INT, Winners Play-Off Legs won INT, Final position money won* VARCHAR, Total money won VARCHAR) CREATE TABLE list_of_ministers_for_employment (list_of_ministers_for_employment_id AUTO_INCREMENT PRIMARY KEY, Order VARCHAR, Minister VARCHAR, Party VARCHAR, Prime Minister VARCHAR, Term start VARCHAR, Term end VARCHAR, Term in office VARCHAR) CREATE TABLE northern_villages (northern_villages_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Population (2011) INT, Population (2006) INT, Change (%) INT, Land area (km²) INT, Population density (per km²) INT) CREATE TABLE tournament_3 (tournament_3_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Time VARCHAR, Score VARCHAR, Set 1 VARCHAR, Set 2 VARCHAR, Set 3 VARCHAR, Total VARCHAR, Report VARCHAR)  
SELECT Winners Group Legs won FROM prize_money_won WHERE Player = Mark Dudbridge